Silicon carbide ramming mass is a bulk material made of silicon carbide, graphite, and electrically calcined anthracite as raw materials, mixed with a variety of ultrafine powder additives, and fused cement or composite resin as a binder. It is used to fill the gap between the furnace cooling equipment and the masonry or as a filler for the masonry leveling layer.
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Physical and chemical indicators of silicon carbide ramming material
project | 指标 | ||
SC30 | SC50 | ||
SiC % | ≥30 | ≥50 | |
Bulk density g/cm3 | ≥2.5 | ≥2.6 | |
Apparent porosity % | ≤18 | ≤18 | |
Normal temperature compressive strength MPa | 110℃×24h | ≥60 | ≥80 |
1100℃×3h | ≥100 | ≥120 | |
Heating permanent line change % 1400℃×3h | ±0.3 | ±0.2 | |
Wear resistance cm3 | ≤6 | ≤4 |
Characteristics of silicon carbide ramming mass
- Excellent chemical stability and acid and alkali corrosion resistance
- Excellent high-temperature resistance and wear resistance, able to withstand extreme temperature and wear conditions.
- High thermal conductivity, effectively conducts heat and improves equipment thermal efficiency.
- Strong compressive strength, reaching ≥60 MPa and ≥80 MPa at 110℃ respectively.
5 Excellent wear resistance, extending equipment service life.
Application of silicon carbide ramming mass
- High-temperature equipment in the power industry; such as boilers and reactors.
- High-temperature equipment in the metallurgical industry; such as furnaces and kilns.
- Large high-temperature reactors and piping systems in the chemical industry.
Sic ramming mass production ratio
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- Silicon carbide powder is the main component that provides hardness and durability to the ramming material.
- Binder: Commonly used binders include resins, ceramic binders, etc., which are used to bond silicon carbide powder together and keep it in a certain solid form.
- Lubricant: Lubricants such as polyvinyl alcohol and beeswax are usually used to reduce the friction between silicon carbide powders and improve the fluidity of the ramming material.
- Mold release agent: used to apply to the ramming material mold to facilitate the smooth removal of the ramming material from the mold.
- Other additives: According to needs, some other additives, such as pigments, fillers, etc., can be added to improve the performance of the ramming material or meet specific needs
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